My Iscan has the option to carry out a road test but the instructions aren't very clear. What I managed to work out in the end is the following.
1 - Initiate road test in ABS system, ensure steering is in the straight ahead position as per instructions and switch off ignition.
2 - Start engine and press ESP OFF button until warning triangle is displayed on dash. Drive straight ahead for about 50 yards and turn steering either left or right greater than 90 degrees. As the car corners, the light goes out. Simple as that!
I think the issue I had to start with was that the test had started but had aborted, so no amount of driving would complete the test. I had to restart the test before the warning triangle would come on.
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